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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11032086 B1

PDFFull Text
Date of Patent:
Jun. 08, 2021

Filed:

Mar. 20, 2019

Certificate authority master key tracking on distributed ledger

Applicant:

The Toronto-dominion Bank, Toronto, CA;

Inventors:

Perry Aaron Jones Haldenby, Toronto, CA;

Arthur Carroll Chow, Toronto, CA;

Paul Mon-Wah Chan, Toronto, CA;

John Jong Suk Lee, Toronto, CA;

Linda Tao, Toronto, CA;

Assignee:

The Toronto-Dominion Bank, Toronto, CA;

Attorney:

Duane Morris LLP

Primary Examiner:

Lam S Nguyen

Int. Cl.
CPC ...
H04L 9/32 (2006.01); H04L 29/06 (2006.01); H04L 9/08 (2006.01); G01B 21/20 (2006.01); G01C 15/00 (2006.01); G01M 3/28 (2006.01); G01M 3/38 (2006.01); G01N 21/39 (2006.01); G01N 21/53 (2006.01); G01P 5/00 (2006.01); G06K 9/00 (2006.01); H04W 12/041 (2021.01); H04W 12/069 (2021.01); H04W 12/0431 (2021.01); H04W 12/0433 (2021.01); H04W 12/0471 (2021.01); H04L 9/14 (2006.01); H04L 9/30 (2006.01); G01N 21/17 (2006.01);
U.S. Cl.
CPC ...
H04L 9/3263 (2013.01); G01B 21/20 (2013.01); G01C 15/00 (2013.01); G01M 3/28 (2013.01); G01M 3/38 (2013.01); G01N 21/39 (2013.01); G01N 21/53 (2013.01); G01P 5/00 (2013.01); G06K 9/00201 (2013.01); H04L 9/0861 (2013.01); H04L 9/14 (2013.01); H04L 9/302 (2013.01); H04L 9/3247 (2013.01); H04L 9/3249 (2013.01); H04L 63/0442 (2013.01); H04L 63/06 (2013.01); H04L 63/0823 (2013.01); H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 12/0433 (2021.01); H04W 12/0471 (2021.01); H04W 12/069 (2021.01); G01N 2021/1793 (2013.01); G01N 2021/1795 (2013.01);
Abstract

An apparatus for use in a digital messaging system includes a storage device and a processor coupled to the storage device. The storage device storing software instructions for controlling the processor that when executed by the processor configured the processor to: generate a master private and public key pair; associate the master private and public key pair with a first certificate; and derive at least one domain-specific key from the one of the master private and public key pair. The first certificate is registered to a group comprising a plurality of domains. The domain-specific key is associated with one of the plurality of domains.

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